html {
  font-family: 'Slabo 27px', serif;
  color: white;
  background: black;
  @media (min-width: 650px) {
    font-size: 1.2rem;
  }
}

body {
  max-width: 755px;
  margin: 0 auto;
  padding: 0 15px;
}

body > {
  header {
    margin: 50px 0;
  }
  section {
    margin: 50px 0;
    max-width: 650px;
    p {
      line-height: 1.75;
      background-color: black;
      box-shadow: 0 0 30px 10px black;
    }
  }
  footer {
    margin: 40px 30px 40px 0;
    font-size: 0.8rem;
    opacity: 0.3;
  }
}

h1 {
  font-family: 'Alice', serif;
  text-transform: uppercase;
  font-size: 5rem;
}

h2 {
  font-size: 2rem;
}

a {
  color: white;
}

a.button {
  display: inline-block;
  text-decoration: none;
  text-transform: uppercase;
  font-family: 'Open Sans', sans-serif;
  padding: 10px 20px;
  border: 1px solid white;
  border-radius: 4px;
  margin: 20px 0;
  transition: all 0.4s;
  &:hover {
    background: white;
    color: black;
  }
}

code {
  background-color: #333;
  padding: 5px 5px 3px 5px;
  margin: 0 2px;
  border-radius: 3px;
}

code.repo-url {
  font-size: 1.3rem;
  margin: 1.5rem 0;
  padding: 10px 15px;
  display: block;
  overflow: auto;
  white-space: nowrap;
}

.introduction {
  margin: 40px 0;
  h1 {
    font-size: 9.5vw;
    margin: 0;
    @media (min-width: 650px) {
      margin-left: -6px;
      font-size: 5rem;
    }
  }
  .subheadline {
    font-size: 5.5vw;
    @media (min-width: 650px) {
      font-size: 2rem;
      margin-top: -12px;
    }
    a {
      text-decoration: none;
      border-bottom: 1px solid;
    }
  }
}

@keyframes twinkle {
    from { background-position:0 0; }
    to { background-position:-10000px 5000px; }
}

@keyframes clouds {
    from { background-position:0 0; }
    to { background-position:10000px 0; }
}

.background, .starfield, .twinkle, .clouds {
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
}

.background {
  position: fixed;
  z-index: -1;
}

.starfield, .twinkle, .clouds {
  position: absolute;
}

.starfield {
  background: transparent url("../images/starfield.svg") repeat top center;
  opacity: 0.9;
  z-index: -3;
}

.twinkle {
  background: transparent url("../images/twinkle.svg") repeat top center;
  z-index: -2;
  animation: twinkle 200s linear infinite;
}

.clouds {
  background: transparent url("../images/clouds.png") repeat top center;
  z-index: 0;
  animation: clouds 200s linear infinite;
}

$app-information-stack: "max-width: 500px";

.app-information {
  display: flex;
  align-items: center;
  @media ($app-information-stack) {
    flex-direction: column;
  }
}

.app-icon {
  max-width: 120px;
  max-height: 120px;
  margin: 1em 1em 1em 0;
  @media ($app-information-stack) {
    margin: 1em;
  }
}

blockquote {
  margin: 60px;
  font-size: 2rem;
  @media (max-width: 650px) {
    margin: 60px 20px;
  }
}
